Study on the Temperature Rise Performance of Propellant-Assisted Interrupter Propellant Chamber

As a kind of passive monitoring DC short circuit protection device, propellant-assisted interrupting and arc triggered hybrid current limiting fuse is widely used in the integrated power system of ships. The closed environment temperature of warship is higher, and the temperature rise generated by rated current of device makes the propellant in high temperature environment. High temperature will accelerate the reaction of the propellant itself, weaken the power after excitation, and affect the interrupting performance of the interrupter. In this paper, the thermoelectric coupling model of the device is established to reduce the temperature rise of the propellant, and the temperature rise distribution of the propellant-assisted interrupter is analyzed. Based on the thermal resistance model, the optimal structure design of the interrupter is proposed, and the relevant temperature rise test is carried out. The test and simulation results verify that the optimized structure can reduce the temperature rise of the propellant.